Radiator core



M. EMMER AND W. N ATHANSON.

' RADIATOR CORE.

. 'APPLI CATION FILED AUG-9| I920.

1,419, 1 1 1 PatentedJune 6, 1922'.

UNITED STATES PATENT OFFICE.

RADIATOR CORE.

Specification of Letters Patent. Patented Junefi 1922;

Application filed August 9, 19cc. Serial No. 402,122.

T 0 all to hem it may concern Be it known that we, Minn EMMER andWILLrur NATHANSON, citizen of the United States, and residents of thecity of Chicago, county of Cook, and State of Illinois, have inventedcertain new and useful Improvements in Radiator Cores, of which thefollowing is a specification.

Our invention relates to improvements in radiator cores, and has for itsobject the provision of an improved construction of this character whichis capable of being made of a minimum of material, strong and durable inconstruction and eiilcient in operation.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which,

Fig. 1, is an end view of a portion of a radiator core embodying theinvention,

Fig. 2, a side view of the same, with portions broken away to illustratethe interior arrangement,

Fig. 3, a transverse vertical section of the same,

Fig. 4, an enlarged perspective view, shown partially in section, of aportion of said core, and

Fig. 5, a horizontal section of the same.

The preferred form of construction, as illustrated in the drawings,comprises a plurality of parallel zig-zag water tubes, each of saidtubes being made up of two adjacent zig-zag plates 5 and 6, the plate 6having its edges inwardly offset at the points 7 and the plate 5 havingits edges inwardly ofi'set at the points 8 to bring the edges of saidplates together but leave the usual water tube space 9 between them.These water tubes are assembled in the core in the usual manner withzig-zag distancing plates 10 arranged between them and making fiatcontact alternately therewith as indicated. The plates 10 are providedwith lateral vertical offsets 11 adjacent their edges, thus formingspaces which break the capillary attraction between the fiat contactingareas of the plate 10 with the water tubes, so that when the edges ofthe core are dipped in solder in the usual way the solder will only bedrawn upwardly between said edges by capillary attraction to the edgesof the recesses 11, thus adequately securing the parts together butpreventing waste of solder. These lateral offsets 11 also serve tostiffen the construction of the core. The plates 5 and 6 are provided attheir interior points of contact with the plates 10 with horizontallaterally extending ribs 12 consisting of smooth continuations to apexesof the adjoining inclined portions of said plates, thus materiallyfacilitating the manufacture of said plates. Plates 10 are provided withcorrespondingly shaped grooves 13 to receive said ribs 152, suchconstruction greatly facilitating proper assembling of the parts andstiffening the construction after assembly.

While we have illustrated and described the preferred form ofconstruction for carrying our invention into efl'ect, this is capable ofvariation and modification without de arting from the spirit of theinvention.

e, therefore, do not wish to be limited to the precise details ofconstruction set forth, but desire to avail ourselves of suchmodifications and variations as come within the scope of the appendedclaims.

Having described our invention, what we claim as new and desire tosecure by Letters Patent is 1. A radiator core comprising water tubesspaced from each other; and a co-operating distancing plate between saidtubes, there being a lateral oifset adjacent the ends of said member todestroy the capillary attraction between the contacting areas of saiddistancing plate and said tubes, substantially as described.

2. A. radiator core comprising zig-Zag water tubes spaced from eachother; zig-zag co-operating members positioned between said tubes andalternately making flat contact therewith, there being lateral offsetsin said co-operating members to destroy the capillary attraction betweenthem, the edges of said members being soldered together, substantiallyas described.

3. A radiator core comprising water tubes spaced from each other, eachof said tubes comprising a zigzag member and an adjacent correspondingzig-zag member soldered together adjacent the ends thereof, said membersbeing inwardly ofiset to destroy the capillary attraction between them;and a distancing plate between said tubes having an offset adjacentftheends thereof destroying the capillary attraction betiveentlie con:

zig-zag Water tubes spacedfrom eachotheit;

zig-zag co-operating distancing plates positioned between saidWatertubes and contactstroy capillary attraction between them, the edgesof saidwater,tubesgand'asaid dist,anc-' ing plates being solderedtogether; "laterally projecting ribs at the contactdpoints 10f said atertubes, there being correspoi'lding ove sa d .di tanpingr plate toreceive names to this specification in the presence of s 7 p I v twosubscribing witnesses.v ing alternately therewith, there"'beinglateraloffsets in said dis tancing plates to de- MIKE EMMER'. -'j i H W ILL IAM 'NATHANSON. Witnesses:

JOSHUA R. HIUPOTTSY 1 ,LRQSEiKLTRIB-

